Improvement in metallic window-blinds



w. s. mKc'KRELL.

v Metallic Window Blind.

N0. 166,535. Patented Aug. i0, i875.

WIT as s- IJVVE'JVTOR y f a/l/L .dttorneys.

ILFEYERS, PMOTO-UTHQGRAPHER. WASHINGTON, D. c.

UNITED STATES PATENT OFFICE.

WILLIAM S. MAGKRELL, OF BRENHAM, TEXAS, ASSIGNOR TO HIMSELF, WILLIAM B.WILLSON, AND CURTIS T. ROFF, OF SAME PLACE.

IMPROVEMENT IN METALLIC WINDOW-BLINDS.

Specification forming part of Letters Patent No. 166,535, dated August10, 1875; application tiled June 1, 1875.

To all whom it may concern:

Be it known that I, WILLIAM S. MAGKRELL, of Brenham, in the county ofWashington and State of Texas, have invented certain new and usefulImprovements in Fire-Proof Window- Blinds; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to an improvement in fire-proof window blinds orshutters; and consists in the appliances and devices hereinafterspecified and claimed.

It is well known that extensive conflagrations frequently occur by meansof the interior casings of the windows of adjacent buildings beinginflamed from a neighboring buildmg.

I have discovered a blindwhich acts both as a barrier to the progress offlames attacking windows and as a convenient shutter for the commonpurposes, and is adapted to be adjusted and securely locked in an openor closed position, as hereinafter more fully set forth and claimed.

The material of my invention may be of any suitable substance to resistthe action of flames; but I prefer wrought-iron or cast-iron.

In the drawings, Figure 1 represents my shutter as open; Fig. 2, whenclosed.

A are sections, which are hung vertically instead of longitudinally, asis the old practice, and are fastened by cross-bars a extending acrossthe window. .13 are two vertical cleats attached in any suitable mannerto the sections A. (J is an arm or bar provided with an elbow-joint, c,placed at any suitable distance thereon, by means of which the bar maybe flexed at an angle, so as to cause any one of the little notches c,with which said bar is provided, to be readily engaged with the crossbarD, and thus secure the shutter at any desired opening,'as well as whenthe shutter is closed, to be turned down completely, so that, as one ofthe notches 0 seats itself in the crossbar D, it may form a safe andsecure lock for the blind, which can only be opened by an approach fromthe interior.

There may be any number of these little notches c, to correspond withthe necessity or desire of the case; but the last notch nearest thesection A, to which the arm is attached, should be so situated that whenit connects with the cross-bar it will cause the shutter to be closelyengaged with the window-casing.

E are any suitable cleats on the sides of the window, to which thecross-bars D are ,attached.

The operation" of my invention is readily seen.

The sh utter is more easily closed and opened than if the sections orleaves were hung vertically, since oftentimes the wind or other elementsinterfere with their proper operation, while by my invention a personfrom the interior, without exposing himself to the weather, may promptlyclose the shutter; also, blasts and gusts of wind do not cause anobstruction to the closing.

By means of the arm 0 any desired opening may be effected and securelymaintained.

W hat I claim as new, and desire to secure by Letters Patent, is-

The fire-proof window-blind consisting of horizontal leaves or sectionsA, vertical cleats B, and locking-arm 0, all arranged substantially asand for the purpose described.

In testimony that I claim the foregoing I have hereunto set my hand this7th day of May, 1875.

WILLIAM S. MAUKRELL.

Witnesses JOHN DOOLAN, T. J. NEWMAN.

